cron.h

这是一个我自己仿照linux下cron程序写的精简版的cron

#include <signal.h>
#include <sys/time.h>
#include <time.h>
#include <sys/types.h>
#include <fcntl.h>
#include <sys/stat.h>


#define SECONDS_PER_MINUTE 60
#define MINUTE_RANGE 60
#define HOUR_RANGE 24
#define DAY_OF_MOU_RANGE 24
#define MONTH_OF_YEAR_RANGE 31
#define DAY_OF_WEEK_RANGE 31
#define MAX_FNAME 100
#define SPOOL_DIR	getenv("HOME")
#define	CRON_TAB(u)	"%s/%s", SPOOL_DIR, u
#define MAX_LINE    500

#define MARK(number,n)	(number = (((long int)1 << n) | number))
#define SET(number)	(number = -1)
#define CHECK(number,n)	((number >> n) & 1)


//typedef struct date_rec_ {
//    int minute_rec[MINUTE_RANGE];
//    int hour_rec[HOUR_RANGE];
//    int day_of_mon_rec[DAY_OF_MOU_RANGE];
//    int mon_of_year_rec[MONTH_OF_YEAR_RANGE];
//    int day_of_week_rec[MONTH_OF_YEAR_RANGE];
//    char command[MAX_LINE];
//    struct date_rec_ *next;
//} date_rec;
typedef struct date_rec_ {
    long int minute_rec;
    long int hour_rec;
    long int day_of_mon_rec;
    long int mon_of_year_rec;
    long int day_of_week_rec;
    char command[MAX_LINE];
    struct date_rec_ *next;
} date_rec;